If a toilet is clogged, you can try the following methods to unclog it:
1. Use a plunger: Place the plunger over the drain hole in the toilet bowl and push down and pull up rapidly to create suction and dislodge the blockage.
2. Use a plumbing snake: Insert the plumbing snake into the toilet drain and twist it to break up or remove the blockage.
3. Use a mixture of hot water and dish soap: Pour a mixture of hot water and dish soap into the toilet bowl and let it sit for a while before attempting to flush.
4. Use a chemical drain cleaner: If other methods do not work, you can try using a chemical drain cleaner specifically designed for toilets. Follow the instructions on the product carefully.
If none of these methods work, it may be best to contact a professional plumber for assistance.